Assessment, Statistics, and Research

  The Spearman-Brown formula estimates test score reliability of a full-length test when using a split-half method of reliability. The split-half method divides a test in two and calculate a correlation between the scores of the two halves. Longer tests are yield higher reliability values so the Spearman-Brown formula estimates the reliability value for the full test. Other names for the Spearman-Brown formula are Spearman-Brown Prophecy Formula, Spearman-Brown Correction. Learn more about test statistics in Buy Applied Statistics for Counselors   GOOGLE BOOKS   AMAZON Please check out my website     www.suttong.com     and see my books on    AMAZON          or    GOOGLE STORE Also, consider connecting with me on      FACEBOOK     Geoff W. Sutton           TWITTER    @Geoff.W.Sutton       You can read many published articles at no charge:    Academia    Geoff W Sutton        ResearchGate    Geoffrey W Sutton  

  Scale name: Transgender Positive Identity Measure (T-PIM) Scale overview: The Transgender Positive Identity Measure (T-PIM) is a 24-item, 7-point measure of positive identity for people who identify as transgender. Authors: Riggle, E. D. B., & Mohr, J. J. (2015) Response Type: 7-point rating scale; 1 = disagree strongly, 7 = agree strongly Subscales: There are five factors Authenticity Intimacy Community Social Justice Insights   Sample items     My LGBT identity has given me more confidence     I feel supported by the LGBT community Reliability: Alpha for the 24-items was .93. Alpha values for the five subscales range from .81 to .92. Validity: The authors reported   their method of selecting five factors based on factor analysis. Availability: The full set of 24 items can be found in the PsycTESTS reference. Permissions -- if identified “Test content may be reproduced and used for non-commercial research and educational purposes without

  Scale name: Bisexual Identity Inventory (BII) Scale overview: The Bisexual Identity Inventory measures dimensions of bisexual identity using 24-items rated on a 7-point scale. Authors : Paul, Ron, Smith, Nathan Grant, Mohr, Jonathan J., & Ross, Lori E. (2014). Response Type: 7-point Likert-type ratings from 1 = strongly disagree to 7 = strongly agree. Subscales:   Four (coefficient alphas in parentheses from two samples) Illegitimacy of Bisexual Identity (.80, .84) Anticipated Binegativity (.78, .73) Internalized Binegativity (.87, .84) Identity Affirmation (.91, .93) See Paul et al. (2014b) for factors and psychometrics.   Sample items 1. People probably do not take me seriously when I tell them I am bisexual. 24. I would be better off if I would identify as gay or straight, rather than bisexual Reliability: Coefficient alphas range from .73 to .93 for the Validity: All subscales except Identity Affirmation were significantly correlated with de